KR20090026773A - A silicon containing compound as corrosion inhibitor in polyolefin compositions - Google Patents

Abstract

The present invention relates to the use of a silicon containing compound as corrosion inhibitor in polyolefin compositions, wherein the silicon containing compound has a structure according to the formula (R1) x [Si (R2) y(R3)z]m wherein R1, which may be the same or different if more than one such group is present, is a monofunctional, or, if m = 2, is a bifunctional, hydrocarbyl residue comprising from 1 to 100 carbon atoms; R2, which may be the same or different if more than one such group is present, is a hydro carbyloxy residue comprising from 1 to 100 carbon atoms; R3, is-R4SiR1pR2q, wherein p is 0 to 3, q is 0 to 3, with the proviso that p + q is 3, and R4is-(CH2)rYs(CH2)t-where r and t independently are 1 to 3, s is 0 or 1 and Y is a difunctional heteroatomic group selected from-O-,-S-,-SO-,-SO2-,-NH-,-NR1-or-PR1-, where R1and R2are as previously defined; and x is 0 to 3, y is 1 to 4, z is 0 or 1, with the proviso that x + y + z = 4; and m = 1 or 2.

Description

A Silicon Containing Compound as Corrosion Inhibitor in Polyolefin Compositions

The present invention relates to the use of silicone containing compounds as corrosion inhibitors in polyolefin compositions comprising Broensted acid.

Polyolefin compositions are often polyolefin resins of different properties, such as, for example, having different molecular weights or different comonomer contents, and include several polymer components. In addition, organic and / or inorganic additives, such as stabilizers, are usually present in the polyolefin composition. The nature and amount of these polyolefin resins and these additives depend on the specific use for which the polyolefin composition is designed.

Depending on the particular type of polyolefin composition and its application, the polyolefin composition may comprise Bronsted acid. This is the case, for example, of polyolefin compositions comprising crosslinked polyolefins having silanol condensation catalysts comprising Bronsted acid, for example sulfonic acid and hydrolyzable silane groups.

The resulting composition has acidic behavior in the presence of Bronsted acid, especially Bronsted strong acid such as, for example, sulfonic acid. Bronsted acid can be added to the basic resin in the step of compounding. In all further processing steps and applications, the polyolefin composition is designed such that the acidic components of the composition do not cause undesirable effects on the environment.

In the compounding step, the equipment is contacted with the polyolefin composition and the additives. This is also valid for subsequent processing steps, for example extrusion steps for cable production.

In addition, corrosion may occur when a polyolefin composition comprising Bronsted acid is used, for example, as a shield for metal conductors in power cables.

In all these conditions, corrosion of the material in contact with the polyolefin composition may occur. This is very undesirable because the life of the material is shortened.

It is therefore an object of the present invention to provide corrosion inhibitors for use in polyolefin compositions and thus to prevent corrosion of materials in contact with the polyolefin composition.

Corrosion inhibitors are well known in the art. Corrosion inhibitors are chemical compounds that stop or slow the corrosion of metals or alloys when added at low concentrations. The desired effect of the corrosion inhibitor can be achieved by forming a passivation layer that interrupts the access of the corrosive material to the metal, or alternatively, by inhibiting the oxidation or reduction portion of the redox reaction corrosion system. Since all oxidation requires reduction to occur at the same time, it may be sufficient to inhibit either reaction. A further alternative is to remove the oxidant from the redox system. If oxidants such as oxygen are excluded, the rate of corrosion can be controlled by the rate of reduction of the water.

It has surprisingly been found that this object can be achieved by using silicone containing compounds as corrosion inhibitors in polyolefin compositions.

Accordingly, the present invention provides the use of a silicone containing compound as a corrosion inhibitor in a polyolefin composition comprising Bronsted acid, wherein the silicone containing compound has the structure of formula (I):

(R ¹ ) _x [Si (R ² ) _y (R ³ ) _z ] _m (I)

Where

R ¹ may be the same or different if a plurality of groups are present and is monofunctional or, if m = 2, is a bifunctional hydrocarbyl residue optionally containing heteroatom substituents and containing 1 to 100 carbon atoms;

R ² may be the same or different if a plurality of groups are present and is a hydrocarbyloxy moiety containing from 1 to 100 carbon atoms;

R ³ is —R ⁴ SiR ¹ _p R ² _q ,

Wherein p is 0 to 3, preferably 0 to 2,

q is 0 to 3, preferably 1 to 3,

P + q is 3,

R ⁴ is-(CH ₂ ) _r Y _s (CH ₂ ) _t- ,

Wherein r and t are independently 1 to 3,

s is 0 or 1,

Y is a bifunctional heteroatom group selected from -O-, -S-, -SO-, -SO _2- , -NH-, -NR ¹ -and -PR ^1- ,

Wherein R ¹ and R ² are as defined above;

x is 0 to 3,

y is 1 to 4,

z is 0 or 1,

Provided that x + y + z = 4;

m is 1 or 2.

The use according to the invention results in less corrosive material in contact with the polyolefin composition comprising Bronsted acid.

Compounding of the polyolefin composition is preferably carried out by extrusion.

Preferably, the silicone containing compound has high compatibility with the polymer composition, which means that even after treating the composition for several hours at an elevated temperature, no major portion of the silicone containing compound is volatilized from the composition. The compatibility of the silicon-containing compound can be adjusted, in particular by appropriate selection of the R ¹ group, to be sufficiently large and non-polar.

Also preferably, in formula (I) for the silicon containing compound:

R ¹ may be the same or different if a plurality of groups are present, and an alkyl, arylalkyl, alkylaryl, or aryl group containing 1 to 40 carbon atoms, provided that a plurality of R ¹ groups are present, R ¹ group Has a total of 60 carbon atoms,

More preferably:

R ¹ may be the same or different if a plurality of groups are present, and are linear or branched C ₆ -to C ₂₂ -alkyl, even more preferably C ₈ -to C ₂₀ -alkyl group.

Also preferably in formula (I) for the silicon containing compound:

R ² may be the same or different if a plurality of groups are present, and an alkoxy, aryloxy, alkylaryloxy, or arylalkyloxy group containing 1 to 15 carbon atoms, provided that a plurality of R ² groups are present, The total number of carbon atoms in the alkyl portion of the R ² group is up to 40,

More preferably:

R ² may be the same or different if a plurality of groups are present, linear or branched C ₁ to C ₁₀ -alkoxy, more preferably C ₁ to C ₈ -alkoxy, even more preferably C ₁ to C ₄ -alkoxy, most preferably a methoxy, ethoxy, propoxy, or 1-butoxy group.

The alkyl moiety of R ¹ and R ² may be linear or branched.

R ¹ and R ² may include heteroatom substituents, but it is preferred that R ¹ and R ² do not have any heteroatom substituents.

Preferably in formula (I), x = 1.

Also preferably in formula (I), y = 3.

Furthermore, preferably in formula (I), z = O.

Finally, preferably in formula (I), m = 1.

Preferred silicone containing compounds are also all compounds which are any combination of the above-mentioned preferred embodiments for any variable of formula (I).

In a particularly preferred embodiment, the silicon containing compound comprises, more preferably consists of hexadecyl trimethoxy silane.

The amount of silicone containing compound in the polyolefin composition is preferably 0.001 to 5% by weight of the total compound, more preferably 0.01 to 2.5% by weight of the total composition, most preferably 0.5 to 1.5% by weight of the total composition.

Cross-linking of polyolefins by means of such additives is known to improve the properties of polyolefins, such as mechanical strength and chemical thermal resistance. Cross-linking can be carried out by condensation of silanol groups contained in polyolefins which can be obtained by hydrolysis of silane groups. The silane compound may be introduced as a cross-linkable group, for example, by grafting of the silane compound onto the polyolefin or by copolymerization of the silane group containing monomer and the olefin monomer. Such techniques are known from US 4,413,066, US 4,297,310, US 4,351,876, US 4,397,981, US 4,446,283 and US 4,456,704.

For cross-linking of the polyolefins, silanol condensation catalysts should be used. Typical catalysts are, for example, tin-organic compounds such as dibutyl tin dilaurate (DBTDL). It is also known that the cross-linking process is preferably carried out in the presence of an acidic silanol condensation catalyst. Unlike conventional tin-organic catalysts, acidic catalysts allow cross-linking to occur quickly at room temperature. Such acidic silanol condensation catalysts are disclosed, for example, in WO 95/17463. The contents of this document are incorporated herein by reference.

In a preferred embodiment of the present invention, the polyolefin composition wherein the silicon-containing compound described above is used as a corrosion inhibitor comprises a crosslinkable polyolefin having hydrolyzable silane groups. The Bronsted acid present in the composition is then used as silanol condensation catalyst.

In this embodiment, the composition is present in the composition in an initial amount corresponding to 0.060 moles of hydrolyzable group per 1000 g of composition and after 74 hours storage at 60 ° C. in air, still at least 0.035 moles of hydrolyzable per 1000 g of composition As long as it is present in the composition in an amount corresponding to the group, the silicone containing compound is preferably compatible with the composition.

The Bronsted acid may comprise inorganic acids such as sulfuric acid and hydrochloric acid and precursors of citric acid, stearic acid, acetic acid, sulfonic acid and alkanic acid, such as dodecanoic acid, or any of the mentioned compounds.

Preferably, Bronsted acid is sulfonic acid, more preferably organic sulfonic acid.

More preferably, Bronsted acid is an organic sulfonic acid comprising at least 10 C-atoms, more preferably at least 12 C-atoms and most preferably at least 14 C-atoms, wherein the sulfonic acids are for example benzene, naphthalene, And at least one aromatic group, which may be a phenanthrene or anthracene group. In organic sulfonic acids, there may be one, two or more sulfonic acid groups, and the sulfonic acid group (s) may be attached to the non-aromatic, or preferably aromatic, groups of organic sulfonic acids.

More preferably, the aromatic organic sulfonic acid comprises the following structural elements:

Ar (SO ₃ H) _x (II)

Where

Ar is a substituted or unsubstituted aryl group,

x is 1 or more.

The organic aromatic sulfonic acid silanol condensation catalyst may comprise a structural unit according to formula (II) once or several times, for example twice or three times. For example, two structural units according to formula (II) may be linked to one another via a bridging group such as an alkylene group.

Preferably, Ar is an aryl group substituted with at least one C ₄ -to C ₃₀ -hydrocarbyl group, more preferably C ₄ -to C ₃₀ -alkyl group.

The aryl group Ar is preferably an aromatic group comprising three fused rings such as phenyl group, naphthalene group or phenanthrene and anthracene.

Preferably, in formula (II), x is 1, 2 or 3, more preferably x is 1 or 2.

In addition, the compound preferably used as the organic aromatic sulfonic acid silanol condensation catalyst has 10 to 200 C-atoms, more preferably 14 to 100 C-atoms.

In one preferred embodiment, Ar is a hydrocarbyl substituted aryl group, the total compound comprises 14 to 28 carbon atoms, more preferably Ar group is a hydrocarbyl substituted benzene or naphthalene ring, hydrocarbyl The bill radical (s) contain 8 to 20 carbon atoms in the case of benzene and 4 to 18 atoms in the case of naphthalene.

More preferably, the hydrocarbyl radical is an alkyl substituent having 10 to 18 carbon atoms, even more preferably the alkyl substituent has 12 carbon atoms and is selected from dodecyl and tetrapropyl. Because of commercial availability, it is most preferred that the aryl group is a benzene substituted group with an alkyl substituent containing 12 carbon atoms.

Currently most preferred compounds are dodecyl benzene sulfonic acid and tetrapropyl benzene sulfonic acid.

The silanol condensation catalyst may be a precursor of sulfonic acid compounds, including all the preferred embodiments mentioned, for example compounds which are converted to sulfonic acid compounds by hydrolysis. Such precursors are, for example, sulfonic acids provided with hydrolyzable protecting groups such as acetyl groups which can be removed by hydrolysis, or acid anhydrides of, for example, sulfonic acid compounds.

In a second preferred embodiment, the sulfonic acid catalyst is selected from those described in EP 1 309 631 and EP 1 309 632, ie with all the preferred embodiments of the sulfonic acids described in the mentioned European patent,

a) a compound selected from the group

(i) alkylated naphthalene monosulfonic acids substituted with 1 to 4 alkyl groups, wherein the alkyl groups are linear or branched alkyls having 5 to 40 carbons each, the alkyl groups are the same or different, and the carbons in the alkyl groups The total number of is in the range of 20 to 80 carbons;

(ii) arylalkyl sulfonic acids, where aryl is phenyl or naphthyl, substituted with 1 to 4 alkyl groups, wherein the alkyl groups are linear or branched alkyl each having 5 to 40 carbons, and alkyl The groups are the same or different and the total number of carbons in the alkyl group ranges from 12 to 80;

(iii) (i) or (ii) selected from the group consisting of anhydrides, esters, acetylates, epoxy blocked esters and amine salts that can be hydrolyzed to the corresponding alkyl naphthalene monosulfonic acid or arylalkyl sulfonic acids derivative;

(iv) the metal salt of (i) or (ii) wherein the metal ion is selected from the group consisting of copper, aluminum, tin and zinc; And

b) a compound selected from the group

(i) alkylated aryl disulfonic acids selected from the group consisting of the following structures (III) and (IV):

[Wherein,

R ¹ and R ² are the same as or different from each other, and are linear or branched alkyl groups having 6 to 16 carbons,

y is 0 to 3,

z is from 0 to 3,

Provided that y + z is 1 to 4,

n is 0 to 3,

X is -C (R ₃ ) (R ₄ )-(R ₃ and R ₄ are each H or independently a linear or branched alkyl group of 1 to 4 carbons, n is 1), -C (= 0 )-(n is 1), -S- (n is 1 to 3) and -S (O) _2- (n is 1);

(ii) a derivative of (i) selected from the group consisting of anhydrides, esters, epoxy blocking sulfonic acid esters, acetylates and amine salts which can be hydrolyzed to alkylated aryl disulfonic acids.

Preferably, in the polyolefin composition, the silanol condensation catalyst is present in an amount of 0.0001 to 6% by weight, more preferably 0.001 to 2% by weight, and most preferably 0.02 to 0.5% by weight.

Preferably, the cross-linkable polyolefin comprises, and more preferably consists of, polyethylenes containing hydrolyzable silane groups.

Hydrolyzable silane groups can be introduced mostly into polyolefins, for example, by grafting by chemical modification of the polymer, mainly by the addition of silane groups in radical reactions, or by copolymerizing ethylene monomers and silane group containing comonomers. . Two techniques are well known in the art.

Preferably, the silane group containing polyolefin is obtained by copolymerization. In the case of polyolefins, preferably polyethylenes, the copolymerization is preferably carried out with unsaturated silane compounds represented by the formula (V):

R ¹ SiR ² _q Y _{3 -q} (V)

Where

R ¹ is an ethylenically unsaturated hydrocarbyl, hydrocarbyloxy, or (meth) acryloxy hydrocarbyl group,

R ² is an aliphatic saturated hydrocarbyl group,

Y may be the same or different and is a hydrolyzable organic group,

q is 0, 1 or 2.

Particular examples of unsaturated silane compounds are those in which R ¹ is vinyl, allyl, isopropenyl, butenyl, cyclohexanyl or gamma- (meth) acryloxy propyl; Y is a methoxy, ethoxy, formyloxy, acetoxy, propionyloxy or alkyl- or arylamino group; R ² , if present, is a methyl, ethyl, propyl, decyl or phenyl group.

Preferred unsaturated silane compounds are represented by the formula:

CH ₂ = CHSi (OA) ₃ (VI)

Wherein A is a hydrocarbyl group having 1 to 8 carbon atoms, preferably 1 to 4 carbon atoms.

Most preferred compounds are vinyl trimethoxysilane, vinyl bismethoxyethoxysilane, vinyl triethoxysilane, gamma- (meth) acryl-oxypropyltrimethoxysilane, gamma (meth) acryloxypropyltriethoxysilane and Vinyl triacetoxysilane.

Copolymerization of olefins such as ethylene and unsaturated silane compounds can be carried out under any suitable conditions that result in the copolymerization of the two monomers.

Copolymerization can also be carried out in the presence of a plurality of different comonomers which can be copolymerized with two monomers. The comonomers are (a) vinyl carboxylate esters such as vinyl acetate and vinyl pivalate, (b) alpha-olefins such as propene, 1-butene, 1-hexane, 1-octene and 4-methyl- 1-pentene, (c) (meth) acrylates such as methyl (meth) acrylate, ethyl (meth) acrylate and butyl (meth) acrylate, (d) olefinically unsaturated carboxylic acids such as (meth) acrylic acid , Maleic and fumaric acids, (e) (meth) acrylic acid derivatives, such as (meth) acrylonitrile and (meth) acrylamide, (f) vinyl ethers, such as vinyl methyl ether and vinyl phenyl ether, and (g) aromatic Vinyl compounds such as styrene and alpha-ethyl styrene.

Among these comonomers, vinyl esters of monocarboxylic acids having 1 to 4 carbon atoms, such as vinyl acetate and (meth) acrylates of alcohols having 1 to 4 carbon atoms, such as methyl (meth) -acrylate, desirable.

Particularly preferred comonomers are butyl acrylate, ethyl acrylate and methyl acrylate.

Two or more olefinically unsaturated compounds may be used in combination. The term "(meth) acrylic acid" is intended to include both acrylic acid and methacrylic acid. The comonomer content of the copolymer may be in an amount of up to 70 weight percent, preferably about 0.5 to 35 weight percent, most preferably about 1 to 30 weight percent of the copolymer.

If a graft polymer is used, it can be prepared by any of the two methods described, for example, in US 3,646,155 and US 4,117,195, respectively.

The silane-group containing polyolefin preferably comprises from 0.001 to 15% by weight, more preferably from 0.01 to 5% by weight and most preferably from 0.1 to 2% by weight of the silane compound.

The polymer composition may further contain various additives such as miscible thermoplastics, antioxidants, additional stabilizers, lubricants, fillers, colorants, and foaming agents.

Neutral or acidic, preferably one compound or mixture of compounds used as an antioxidant should comprise sterically hindered phenol groups or aliphatic sulfur groups. The compounds are disclosed in EP 1 254 923 as antioxidants which are particularly suitable for the stabilization of polyolefins containing hydrolyzable silane groups crosslinked with silanol condensation catalysts, in particular acidic silanol condensation catalysts. Other preferred antioxidants are disclosed in WO 2005003199A1.

Preferably the antioxidant is present in the composition in an amount of 0.01 to 3% by weight, more preferably 0.05 to 2% by weight, and most preferably 0.08 to 1.5% by weight.

Silanol condensation catalysts are typically added to the silane-group containing polyolefins by compounding the polymer with a so-called master batch contained in the polymer, for example a polyolefin matrix, in a concentrated form of the catalyst and any additional additives. .

The silanol condensation catalyst and the silicon-containing compound are preferably added to the silane group-containing polyolefin by compounding a master batch comprising the silanol condensation catalyst and the silicon-containing compound with the silane group-containing polyolefin in a polymer matrix in concentrated form.

The matrix polymer is preferably a polyethylene, which may be a homo- or copolymer of polyolefin, more preferably ethylene, for example low density polyethylene, or polyethylene-methyl-ethyl-butyl-acrylate co-containing 1-50% by weight of acrylate. Polymers and mixtures thereof.

As mentioned, the compounds added to the silane group containing polyolefins in the master batch are contained in concentrated form, for example in much larger amounts than in the final composition.

The master batch preferably comprises the silanol condensation catalyst in an amount of 0.3 to 6% by weight, more preferably 0.7 to 3.5% by weight.

The silicone containing compound is preferably present in the master batch in an amount of 1 to 20% by weight, more preferably 2 to 10% by weight.

The master batch is preferably treated with a silane group containing polymer in an amount of 1 to 10% by weight, more preferably 2 to 8% by weight.

Compounding can be performed by any known compounding method, including extruding the final product using a screw extruder, or kneader.

The following examples are intended to further illustrate the invention.

1.Measuring method

a) melt flow rate

The melt flow rate (MFR) was determined according to ISO 1133 and expressed in g / 10 min. MFR refers to the fluidity of the polymer and thus to processability. The higher the melt flow rate, the lower the viscosity of the polymer. The MFR was determined at 190 ° C., which can be determined at different loads, such as 2.16 kg (MFR ₂ ) or 21.6 kg (MFR ₂₁ ).

2. The resulting composition

a) master batch

Master batches were prepared comprising:

Matrix resin: ethylene butylacrylate copolymer (OE6417 available from Borealis) with MFR _{2 at} 7.0 g / 10 min, density of 924 kg / m ³ and 17 wt% butylacrylate;

Silanol condensation catalyst: dibutyl tin dilaurate (DBTL) using linear dodecylbenzene sulfonic acid (DDBSA) or as a conventional silanol condensation catalyst;

Silicon-containing compound: hexadecyl trimethoxy silane (HDTMS),

Antioxidant: 4-methyl-phenyl reaction product with dicyclopentadiene and isobutylene (Ralox LC, CAS-no. 68610-51-5).

The ingredients in the master batches were used in the amounts (% by weight) shown in Table 1. Compounding of the master batch was carried out using Brabender kneader (small chamber, 47 cm ³ ), and the 3 mm thick plates were compression molded at 180 ° C.

Table 1:

Example 1 Comparative Example 1 matrix 88.5 92.5 Sulfonic acid 1.5 1.5 DBTL - - HDTMS 4 - Antioxidant 6 6

b) composition

The amount of 5% by weight of the master batch of Table 1 is Brabender kneader together with 95% by weight of the silane group containing polyethylene having a density of 923 kg / m ³ , MFR ₂ of 0.9 g / 10 min and a silane copolymer content of 1.3% by weight. After treatment with a tape extruder.

c) corrosion behavior in the extruder

Fc 52)으로 제조된 특정 다이를 장착하여 부식을 체크하였다. 압출기 중의 실린더는 질산화 강철로 제조된 것이며, 스크류의 표면은 크롬-도금된 것이다. 가능한 한 긴 체류 시간을 얻기 위하여, 출력을 낮게 유지하였다. 100 시간의 실시 후, 압출기를 세척(purge)하였다. 다음 관찰을 수행하였다. 실시예 1의 마스터 뱃취를 사용하는 경우, 다이의 채널은 균질하게 황갈색을 띄었다. 금속의 표면 영역을 현미경으로 분석하였다. 부식이 발생하지 않은 것을 관찰하였다. 통상의 세정 수지를 사용하여 다이를 추가로 100 시간 동안 세척하였다. 100 시간 후, 일부 부식 점이 관찰되었다.In the processing step of the above mentioned tape extruder, the extrusion behavior was measured. Mild steel in tape extruder before tape die (Ovako 550

Corrosion was checked by mounting a specific die made of Fc 52). The cylinder in the extruder is made of steel nitrate and the surface of the screw is chromium-plated. In order to obtain the longest possible residence time, the output was kept low. After 100 hours of run, the extruder was purged. The following observations were made. When using the master batch of Example 1, the channels of the die were homogeneous tan. The surface area of the metal was analyzed under a microscope. It was observed that no corrosion occurred. The die was washed for an additional 100 hours using a conventional cleaning resin. After 100 hours, some corrosion points were observed.

The conclusion is that no corrosion was observed after 100 hours of operation with the composition of the present invention. In order to shorten the test period, the dies were made of steel more susceptible to corrosion than the common steel types used in extruders.

In contrast, if the composition of Comparative Example 1 was run in the same manner, significant corrosion occurred after the first 100 hours.

d) weight reduction due to corrosion

The weight loss of steel in methacrylic acid (MAA) containing 620 ppm water was tested with different amounts of HDTMS. The results are shown in FIG. If no HDTMS was added, significant weight loss of up to 14% by weight occurred after 100 days. When HDTMS was added at this time, the weight loss, for example, the corrosion of steel abruptly stopped. When 2 wt% HDTMS was added, the weight loss was not as high as without HDTMS. In addition, when 5% or 10% by weight were used, the effect was almost the same, i.e. very little or no weight loss. Thus, these examples show that 5% by weight of HDTMS prevents corrosion of the steel.

Note that 620 ppm water is used in this example. This is a very high level of water. Typically, water levels of 100-500 ppm are common in such applications.

Claims (15)

Use of a silicone-containing compound having the structure of formula (I) as a corrosion inhibitor for polyolefin compositions comprising Broensted acid: (R ¹ ) _x [Si (R ² ) _y (R ³ ) _z ] _m (I) Where R ¹ may be the same or different if a plurality of groups are present and is monofunctional or, if m = 2, is a bifunctional hydrocarbyl residue containing 1 to 100 carbon atoms; R ² may be the same or different if a plurality of groups are present and is a hydrocarbyloxy moiety containing from 1 to 100 carbon atoms; R ³ is —R ⁴ SiR ¹ _p R ² _q , Where p is 0 to 3, q is 0 to 3, P + q is 3, R ⁴ is-(CH ₂ ) _r Y _s (CH ₂ ) _t- , Wherein r and t are independently 1 to 3, s is 0 or 1, Y is a bifunctional heteroatom group selected from -O-, -S-, -SO-, -SO _2- , -NH-, -NR ¹ -and -PR ^1- , Wherein R ¹ and R ² are as defined above; x is 0 to 3, y is 1 to 4, z is 0 or 1, Provided that x + y + z = 4; m is 1 or 2. The compound of claim 1 in the formula for a silicon containing compound, R ¹ may be the same or different if a plurality of groups are present, and an alkyl, arylalkyl, alkylaryl, or aryl group containing 1 to 30 carbon atoms, provided that a plurality of R ¹ groups are present, R ¹ group Has a total of 60 carbon atoms, R ² may be the same or different if a plurality of groups are present, and an alkoxy, aryloxy, alkylaryloxy, or arylalkyloxy group containing 1 to 15 carbon atoms, provided that a plurality of R ² groups are present, And wherein the total number of carbon atoms in the alkyl portion of the R ² group is at most 40. The chemical formula according to claim 1, wherein in the formula for a silicon-containing compound, And R ¹ is a linear or branched C ₆ -to C ₂₂ -alkyl group. 4. A chemical formula according to any one of claims 1 to 3, wherein And R ² is a linear or branched C ₁ -to C ₁₀ -alkoxy group. The chemical formula according to any one of claims 1 to 4, wherein x = 1, y = 3, z = 0 and m = 1. 6. Use according to any one of claims 1 to 5, characterized in that the silicon containing compound comprises hexadecyl trimethoxy silane. 7. Use according to any one of the preceding claims, characterized in that the amount of silicone containing compound is 0.001 to 5% by weight of the total composition. Use according to any of the preceding claims, characterized in that the polyolefin composition comprises crosslinkable polyolefins having hydrolyzable silane groups. 9. Use according to claim 8, wherein the crosslinkable polyolefin having hydrolyzable silane groups comprises polyethylene having hydrolyzable silane groups. 10. Use according to claim 8 or 9, wherein in the crosslinkable polyolefin having hydrolyzable silane groups, the silane groups are present in an amount of 0.001 to 15% by weight. Use according to any one of claims 8 to 10, characterized in that the composition further comprises a silanol condensation catalyst. Use according to claim 11, characterized in that the silanol condensation catalyst comprises organic sulfonic acid. 13. Use according to claim 12, characterized in that the silanol condensation catalyst comprises an organic sulfonic acid comprising at least 10 C-atoms and further comprising at least one aromatic group. Use according to any of claims 11 to 13, characterized in that the silanol condensation catalyst comprises an organic sulfonic acid comprising the following structural element (II): Ar (SO ₃ H) _x (II) Where Ar is a substituted or unsubstituted aryl group, x is 1 or more. 15. Use according to claim 14, wherein Ar in formula (II) is substituted with one or more C ₄ -to C ₃₀ -hydrocarbyl groups and the total silanol condensation catalyst comprises 10 to 200 C-atoms. .

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